Earthquake with magnitude of ML 1.8 on date 13-08-2019 and time 18:23:46 (Italy) in region 1 km S Castelnuovo Magra (SP)

A magnitude ML 1.8 earthquake occured in region: 1 km S Castelnuovo Magra (SP), on

  • 13-08-2019 16:23:46 (UTC)
  • 13-08-2019 18:23:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.09, 10.02 at 9 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Castelnuovo Magra SP 1 8415 8415
Ortonovo SP 2 8277 16692
Fosdinovo MS 5 4883 21575
Sarzana SP 5 21976 43551
Ameglia SP 6 4365 47916
Carrara MS 7 63133 111049
Lerici SP 9 10228 121277
Arcola SP 9 10607 131884
Santo Stefano di Magra SP 11 9360 141244
Massa MS 12 69479 210723
Vezzano Ligure SP 12 7356 218079
Aulla MS 14 11263 229342
Podenzana MS 14 2180 231522
Bolano SP 15 7813 239335
Follo SP 15 6337 245672
Montignoso MS 15 10323 255995
Portovenere SP 15 3630 259625
La Spezia SP 15 93959 353584
Tresana MS 17 2044 355628
Casola in Lunigiana MS 17 988 356616
Minucciano LU 17 2102 358718
Fivizzano MS 18 7925 366643
Forte dei Marmi LU 19 7510 374153
Licciana Nardi MS 19 4949 379102
Seravezza LU 20 13073 392175

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km W of Carrara (63133 inhabitants)
12 Km NW of Massa (69479 inhabitants)
15 Km E of La Spezia (93959 inhabitants)
31 Km NW of Viareggio (62467 inhabitants)
48 Km NW of Lucca (89046 inhabitants)
52 Km NW of Pisa (89158 inhabitants)
65 Km NW of Livorno (159219 inhabitants)
74 Km W of Pistoia (90315 inhabitants)
82 Km SW of Parma (192836 inhabitants)
83 Km SW of Reggio nell'Emilia (171345 inhabitants)
89 Km W of Prato (191150 inhabitants)
94 Km E of Genova (586655 inhabitants)
95 Km SW of Modena (184973 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.8 2019-08-13
16:23:46
44.09 10.02 9 2019-08-13
16:31:19
Sala Sismica INGV-Roma 71459871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-13 16:23:46 ± 0.16
Latitude 44.09 ± 0.01
Longitude 10.02 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71459871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1376
Semi-minor axis of confidence ellipse (meter) 679
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 189
Circular confidence region, given by single value of horizontal uncertainty (meter) 1380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 115
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.42
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.75183
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 22
Type of magnitude ML
Reference to an origin 71459871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-13 16:31:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IT.MCLF.HNZ. 2019-08-13T16:25:40.64 3.0 undecidable manual Sn -3.69 0
IV.LRP.EHZ. 2019-08-13T16:25:29.41 3.0 undecidable manual Sn -1.48 0
IV.TDS.HHZ. 2019-08-13T16:25:28.42 3.0 positive manual Pn 3.43 0
IV.MF5.EHZ. 2019-08-13T16:25:18.06 3.0 undecidable manual Sg 8.94 0
IV.STAL.HHZ. 2019-08-13T16:25:11.11 3.0 undecidable manual Sn 2.89 0
IV.ARRO.EHZ. 2019-08-13T16:25:09.40 3.0 undecidable manual Sg 4.99 0
IV.EL6.EHZ. 2019-08-13T16:25:07.69 3.0 undecidable manual Sg 7.95 0
IV.MNTT.EHZ. 2019-08-13T16:25:06.09 3.0 undecidable manual Sn -4.41 0
CH.MUGIO.HHZ. 2019-08-13T16:24:45.89 3.0 undecidable manual Sn 1.31 0
IV.CERT.HHZ. 2019-08-13T16:24:45.96 3.0 negative manual Pg 7.88 0
IV.AGLI.HHZ. 2019-08-13T16:24:34.67 3.0 undecidable manual Pn -3.57 0
SI.KOSI.HHZ. 2019-08-13T16:24:31.86 3.0 positive manual Pg 4.17 0
IV.NDIM.HNZ. 2019-08-13T16:24:17.54 3.0 undecidable manual S -3.06 0
IV.SEI.HHZ. 2019-08-13T16:24:07.60 3.0 undecidable manual P 0
GU.GRAM.HHZ. 2019-08-13T16:24:02.24 0.1 undecidable manual S 5 0.3984 50 0.55 85
IV.CRMI.HHZ. 2019-08-13T16:24:02.36 0.1 undecidable manual P 113 0.7518 50 0.85 70
IV.MSSA.HHZ. 2019-08-13T16:24:01.70 0.1 undecidable manual S 302 0.4227 50 -0.72 79
GU.CARD.HHZ. 2019-08-13T16:23:59.17 0.3 undecidable manual S 101 0.339 50 -0.75 60
IV.PII.HHZ. 2019-08-13T16:23:57.83 0.6 undecidable manual P 135 0.5198 50 0.29 44
MN.VLC.HHZ. 2019-08-13T16:23:57.35 0.3 undecidable manual S 76 0.2707 106 -0.47 67
GU.POPM.HHZ. 2019-08-13T16:23:57.40 1.0 negative manual P 95 0.5315 50 -0.34 22
IV.BDI.HHZ. 2019-08-13T16:23:55.80 0.1 negative manual P 94 0.4146 50 0.07 95
GU.GRAM.HHZ. 2019-08-13T16:23:55.68 0.6 negative manual P 5 0.3984 50 0.22 46
IV.MSSA.HHZ. 2019-08-13T16:23:55.79 1.0 negative manual P 302 0.4227 50 -0.09 24
GU.CARD.HHZ. 2019-08-13T16:23:54.40 0.6 negative manual P 101 0.339 50 -0.04 48
MN.VLC.HHZ. 2019-08-13T16:23:53.15 0.6 negative manual P 76 0.2707 106 -0.07 49
IV.PLMA.HHZ. 2019-08-13T16:23:52.65 0.1 undecidable manual S 250 0.1277 122 -0.08 100
IV.PLMA.HHZ. 2019-08-13T16:23:50.51 0.1 undecidable manual P 250 0.1277 122 0.23 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PLMA.HHE. ML:1.9 0.000752 0.14 AML other m 2019-08-13T16:23:52.70
IV.PLMA.HHN. ML:2 0.0011685 1.32 AML other m 2019-08-13T16:23:53.14
MN.VLC.HHN. ML:1.2 8.11E-5 0.42 AML other m 2019-08-13T16:23:57.68
MN.VLC.HHE. ML:1.4 0.0001115 0.52 AML other m 2019-08-13T16:23:59.28
GU.CARD.HHN. ML:1.9 0.0002685 0.8 AML other m 2019-08-13T16:23:59.22
GU.CARD.HHE. ML:1.7 0.000191 1.36 AML other m 2019-08-13T16:23:59.27
IV.BDI.HHN. ML:1.4 6.895E-5 0.52 AML other m 2019-08-13T16:24:01.70
GU.GRAM.HHE. ML:1.7 0.0001645 0.26 AML other m 2019-08-13T16:24:02.48
GU.GRAM.HHN. ML:1.8 0.000183 0.9 AML other m 2019-08-13T16:24:04.04
IV.BDI.HHE. ML:1.5 8.525E-5 0.28 AML other m 2019-08-13T16:24:06.71
IV.PII.HHN. ML:1.7 0.000109 0.22 AML other m 2019-08-13T16:24:06.82
GU.POPM.HHE. ML:1.8 0.000147 0.74 AML other m 2019-08-13T16:24:09.01
IV.PII.HHE. ML:1.7 0.00011505 0.52 AML other m 2019-08-13T16:24:09.16
GU.POPM.HHN. ML:1.9 0.0001705 0.12 AML other m 2019-08-13T16:24:09.18
CH.MUGIO.HHE. ML:1.6 1.1325E-5 0.66 AML other m 2019-08-13T16:24:30.61
CH.MUGIO.HHN. ML:1.6 1.155E-5 0.56 AML other m 2019-08-13T16:24:57.70
IV.ARRO.EHE. ML:2.3 2.765E-5 0.26 AML other m 2019-08-13T16:25:14.41
IV.ARRO.EHN. ML:2.4 3.995E-5 1.38 AML other m 2019-08-13T16:25:15.02
IV.STAL.HHN. ML:3.6 0.000406 0.4 AML other m 2019-08-13T16:25:30.72
IV.STAL.HHE. ML:3.8 0.000738 1.44 AML other m 2019-08-13T16:25:31.72
IV.CERT.HHN. ML:2.8 5.86E-5 0.1 AML other m 2019-08-13T16:25:41.75
IV.CERT.HHE. ML:2.5 3.06E-5 1.9 AML other m 2019-08-13T16:25:41.96
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download